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Part number: 50003-M45RE
Product Details
HKS 50003-M45RE Iridium Spark Plugs
Products specifications
Heat Range 9

ALL PLUGS SOLD INDIVIDUALLY

HKS S-Series Super Fire Racing Spark Plugs

HKS S-Series Super Fire Racing Spark Plugs are high performance Iridium plugs designed to handle advanced levels of tuning and still offer easy start-up and smooth idling.

  • 0.4mm diameter Iridium plug electrode core
  • U-shaped grooved electrode
  • S-Series Super Fire Spark Plugs are recommended for smooth cold starting, response and acceleration.

M-Series Super Fire Spark Plugs

HKS M-Series spark plugs are high performance Iridium plugs designed to provide improved ignition performance, durability and anti-carbon build-up.

  • 0.6mm Iridium Alloy Center Electrode
  • Outer Electrode with Platinum Chip
  • Short Type Outer Electrode (Anti-Vibration)
  • Thermal Edge
  • Spark Support Gap

*M Series is recommended for reliable ignition, durability and anti-carbon buildup under high load.

The Iridium alloy is used because of its durability and reliability. On an average plug, a narrow core typically shortens life span of plug but with the intense durability of iridium there is no sacrifice in any longevity. With a high melting point of 2454 degrees C, opposed to the 1769 degrees C of white gold, the electrode can tolerate the high levels of compression and minor knocking without any deterioration. A nickel coating on the housing also prevents the spark plug from premature deterioration. The Iridium plugs are available for multiple applications and offered in colder heat ranges of 7 and up and specifically for rotary, heat ranges of 9 and up are offered.

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They have the best prices and fast shipping too.
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WOW!  What a relief to be able to order a product and receive the correct product in excellent condition in a timely manner!  Not to mention the prices beat the competition by more than a little!!
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Best price I could find! Great customer service kept me informed through the whole order process to insure acuracy since it was being sent directly from the manufacture. Recieved my order in good time, right parts and no damage. Overall very satisfied and will be doing business again in the future.
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Very competitive low prices and great product selection.  Will definitely look to this vendor when purchasing automotive parts in the future.
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Fitment
Mazda RX-7
1995 Mazda RX-7 ALL
1994 Mazda RX-7 ALL
1993 Mazda RX-7 ALL
1992 Mazda RX-7 ALL
1991 Mazda RX-7 ALL
1990 Mazda RX-7 ALL
1989 Mazda RX-7 ALL
1988 Mazda RX-7 ALL
1987 Mazda RX-7 ALL
1986 Mazda RX-7 ALL
1985 Mazda RX-7 ALL
1984 Mazda RX-7 ALL
1983 Mazda RX-7 ALL
1982 Mazda RX-7 ALL
1981 Mazda RX-7 ALL
1980 Mazda RX-7 ALL
1979 Mazda RX-7 ALL
Mazda RX-8
2011 Mazda RX-8 ALL
2010 Mazda RX-8 ALL
2009 Mazda RX-8 ALL
2008 Mazda RX-8 ALL
2007 Mazda RX-8 ALL / Base
2006 Mazda RX-8 ALL / Base
2005 Mazda RX-8 ALL / Base
2004 Mazda RX-8 ALL / Base
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